NDLI: Dioxin and 1,2-dichlorobenzene adsorption in aluminosilicate zeolite Beta

Content Provider	Springer Nature Link
Author	Bullot, Laetitia Abda, Maher Ben Simon Masseron, Angélique Jean Daou, T. Chaplais, Gérald uali, Habiba Schäf, Oliver Zerega, Yves Fiani, Emmanuel Patarin, Joël
Copyright Year	2016
Abstract	The influence of sodium cations content in zeolite Beta crystals of different sizes (between 200 nm and 2 μm) on the adsorption of pollutants (dioxin and polychlorobenzene) is investigated. In this study, protons which balance the negative charge of the zeolitic framework are partially replaced by sodium cations. Chemical, structural and textural analyses performed on the exchanged crystals indicate that the exchange rates reached 75–80 % and that the structure of zeolites is preserved. Adsorptions of pollutants in zeolite Beta samples were successfully carried out using 1,2-dichlorobenzene (gas phase) and 2,3-DiChloroDibenzo-p-Dioxin: 2,3-DCDD (liquid phase) but reveal different behaviors. Indeed, all samples adsorb the same amount (around 7 molecules) of 1,2-dichlorobenzene per unit-cell of zeolite, whereas the dioxin adsorption amounts increase with the amount of sodium cations. Compared to their protonic forms, the dioxin adsorption capacities were multiplied by a factor of 1.3 for the sodium exchanged small crystals (size between 200 nm and 1 μm) and by a factor of 4 for the sodium exchanged microcrystals (size between 1 and 2 μm) for an equilibrium concentration of 2,3-DCDD of 0.5 mmol/L in both cases.
Starting Page	101
Ending Page	112
Page Count	12
File Format	PDF
ISSN	09295607
Journal	Adsorption
Volume Number	23
Issue Number	1
e-ISSN	15728757
Language	English
Publisher	Springer US
Publisher Date	2016-10-20
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Beta zeolite Dioxin Chlorobenzene Adsorption Industrial Chemistry/Chemical Engineering Surfaces and Interfaces, Thin Films Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Surfaces and Interfaces

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